Summary of LFI data characteristics

Quantification of the performance of LFI is summarized in Table 1 below. All the details can be found in the LFI data processing paper Planck-2020-A2.

Table 1. LFI performance parameters

Parameter	30 GHz	44 GHz	70 GHz
Centre frequency [GHz]	28.4	44.1	70.4
Bandwidth [GHz]	9.89	10.72	14.90
Scanning beam FWHMa [arcmin]	33.10	27.94	13.08
Scanning beam ellipticitya	1.37	1.25	1.27
Effective beam FWHMb [arcmin]	32.29	27.00	13.22
White noise level in timelinesc [μKCMB s1/2]	147.9	174.0	151.9
fkneec [mHz]	113.9	53.0	19.6
1/f slopec	-0.92	-0.88	-1.20
Overall calibration uncertaintyd [%]	0.17	0.12	0.20

^a Determined by fitting Jupiter observations directly in the timelines.

^b Calculated from the main beam solid angle of the effective beam, Ω_eff = mean(Ω). These values are used in the source extraction pipeline (Planck-2015-A26).

^c Typical values derived from fitting noise spectra

^d difference between first and last iteration of the iterative calibration (for 30 and 44 GHz) or E2E 2015 result (for 70 GHz). In 2015 the calibration uncertainity was 0.35% and 0.26% at 30 and 44, respectively.